JP6538459B2 - Non-duct type smokeless roaster - Google Patents

Description

  The present invention relates to a smokeless roaster in which smoke does not fill the room during grilling, and more particularly to a non-ducted smokeless roaster that does not require a centralized duct for sucking smoke and exhausting it outdoors.

  The conventional smokeless roaster sucks the smoke generated in the cooking section into the table-built roaster main body and then exhausts it to the outside through a duct installed under the floor etc. Initial equipment investment will be high because centralized duct facilities must be provided. On the other hand, in the case of a non-duct type smokeless roaster, the generated smoke can be cleaned and deodorized in the roaster main body as shown, for example, in the following patent documents 1 to 7 and the like. , Equipment investment will be cheaper. In addition, since the installation location is not limited, there is an advantage that the degree of freedom in layout is high.

Re-issued patent WO2003 / 103464 JP, 2010-63790, A JP, 2008-307217, A JP 2005-169095 A Unexamined-Japanese-Patent No. 2003-259984 Unexamined-Japanese-Patent No. 2000-201826 Unexamined-Japanese-Patent No. 5-248643 gazette

  By the way, in the case of the conventional non-duct type smokeless roaster, for example, since a HEPA filter or an ozone generator is used as a deodorizing method, the cost for deodorizing tends to be high. Further, in the method of adsorption using a mineral such as activated carbon, activated clay or zeolite, the adsorption capacity is saturated immediately and the deodorizing effect does not last for a long time, so that frequent replacement and maintenance are required.

  Accordingly, the present invention has been devised to solve these problems, and the object thereof is to provide a novel non-duct type smokeless roaster which is inexpensive and can maintain excellent deodorizing effect over a long period of time. It is to do.

  In order to solve the above-mentioned problems, according to a first aspect of the present invention, there is provided an exhaust flow path for sucking combustion smoke generated in the heating and cooking section and passing it to the exhaust port on a table serving as a roaster main body having a heating section and an exhaust port. A grease removal unit for removing oil components in the exhaust consisting of the combustion smoke, a dust collection unit for removing smoke components in the exhaust that has passed through the grease removal unit, An activated carbon particle and an air catalyst on the surface of a porous plate detachably mounted on the surface of a porous plate, the deodorizing portion removing the odorous components in the exhaust gas having passed through the dust portion; And a non-duct type smokeless roaster characterized by comprising a deodorizing filter adhered with

  According to such a configuration, since the deodorizing portion is composed of the deodorizing filter in which the activated carbon particles and the air catalyst are attached to the surface of the porous plate, the activated carbon particles effectively adsorb odor components in the exhaust, The air catalyst decomposes the adsorbed odorous components. As a result, the adsorbed odor component does not remain in the deodorizing filter, so that the adsorption capacity is hardly saturated, and the excellent deodorizing effect can be maintained over a long period of time. Further, since the activated carbon particles themselves are inexpensive and the air catalyst itself does not decrease due to a chemical reaction or the like, the maintenance cost can be suppressed low.

Here, the air catalyst defined in the present invention is, for example, an inorganic compound containing iron (Fe), aluminum (Al), potassium (K), titanium (Ti) and water (H ₂ O) as main components. Specifically, it is possible to use the product called Cell Feel (registered trademark) manufactured and sold by Nichirin Chemical Co., Ltd. as it is. The decomposition of the odor component in the exhaust gas by this catalyst is considered to be performed by the following action.

That is, potassium 40 ( ⁴⁰ K) contained in this catalyst acts on water molecules in the air to generate hydroxyl radical (.OH) and hydrogen peroxide. From hydrogen peroxide, hydroxyl radicals are generated by the Fenton reaction in which transition elements such as iron and titanium in the catalyst work. Also, superoxide ions (O ₂ ⁻ ) are generated by reactions starting from hydroperoxyl radicals (.OOH) generated from hydrogen peroxide and oxygen in the air, and these superoxide ions are also odorous components in exhaust gas. Contribute to the decomposition reaction of

  In addition, this catalyst generates hydroxyl radicals from water contained in the exhaust, and also generates superoxide ions from oxygen in the exhaust. Then, these radicals return to water and oxygen again after finishing their roles, and are exhausted from the exhaust port together with the exhaust. And since an air catalyst does not require ultraviolet light like a photocatalyst when it exhibits its catalytic action, even if it is in the main body of the roaster where it is difficult for light to reach it, it exhibits the catalytic effect as long as there is oxygen and moisture in the exhaust. You can keep doing.

  A second invention is the non-duct type smokeless roaster according to the first invention, characterized in that two or more of the deodorizing filters are provided at predetermined intervals. According to such a configuration, since the odorous component can be adsorbed and decomposed in two or more stages, deodorization can be performed more effectively.

  A third invention is the non-duct type smokeless roaster according to the first or second invention, wherein the porous plate is made of aluminum or an aluminum alloy. By thus forming the porous plate from aluminum, which is a heat-resistant and corrosion-resistant metal, excellent heat resistance and durability can be exhibited. Therefore, it can be reused any number of times, and maintenance costs can be reduced. .

  A fourth invention is the non-duct type smokeless rooster according to any one of the first to third inventions, wherein a mesh body having an air catalyst attached to the downstream side of the deodorizing section is provided. According to such a configuration, since the deodorizing component that could not be removed temporarily by the deodorizing part is decomposed by the air catalyst attached to the mesh body, deodorization can be performed more reliably.

  According to the present invention, the activated carbon particles attached to the surface of the porous plate effectively adsorb the odor component in the exhaust, and at the same time the air catalyst decomposes the adsorbed odor component. As a result, the adsorbed odor component does not remain in the deodorizing filter, so that the deodorizing function is difficult to be saturated, and the excellent deodorizing effect can be maintained over a long period of time. Further, since the activated carbon particles themselves are inexpensive and the air catalyst itself does not decrease due to a chemical reaction or the like, the maintenance cost can be suppressed low.

It is an internal structure figure showing one form of an embodiment of non duct type smokeless roaster 100 concerning the present invention. It is a perspective view showing an example of deodorization filters 81A and 81B. It is the elements on larger scale which show the A section in FIG. It is an expanded sectional view showing surface structure of deodorizing filters 81A and 81B. FIG. 7 is a side view showing the deodorizing unit 80. It is a disassembled perspective view which shows the deodorizing part 80. As shown in FIG. It is a conceptual diagram which shows the state which replaces | exchanges the deodorizing filters 81A and 81B via the exhaust port 13. FIG. It is the elements on larger scale which show the A section in FIG. It is a graph which shows the deodorizing performance of the deodorizing filter of only activated carbon, and the deodorizing filters 81A and 81B concerning this invention. It is a side view showing other embodiments of non duct type smokeless roaster 100 concerning the present invention. It is an internal structure figure which shows other embodiment of the non duct type smokeless roaster 100 which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. FIG. 1 shows an embodiment of a non-duct type smokeless roaster 100 according to the present invention. As shown in the figure, the non-duct type smokeless roaster 100 is provided with a heating and cooking unit 12 and an exhaust port 13 in a table-use roaster main body 10 having a top plate 11, and combustion smoke (exhaust) generated in the heating and cooking unit 12 An exhaust flow passage 20 for suctioning and exhausting air from the exhaust port 13 is provided.

  In the exhaust flow passage 20, a fat removing unit 30, a fire protection damper 40, a grease filter 50, a dust collecting unit 60, a sirocco fan 70, and a deodorizing unit 80 are provided in this order from the upstream side. First, the fat removing unit 30 has a structure in which baffles made of, for example, stainless steel are alternately arranged, and collides with oil particles in the form of mist contained in the exhaust gas, cooking stoves, etc. to separate and remove them from the exhaust gas. It is supposed to be. The fire protection damper 40 has a structure in which a valve body (not shown) biased in a spring closing direction is held open by a low melting point metal, and the temperature of the exhaust flowing through the exhaust flow passage 20 is high. For example, when the temperature exceeds 120 ° C. to 130 ° C., this exhaust flow path 20 is closed in a stroke to avoid an unexpected situation such as a fire.

  Next, the grease filter 50 is formed by superposing a plurality of stainless steel nets in a rectangular frame, and is configured to remove the oil component in the exhaust gas that could not be removed by the fat removing unit 30. The dust collection unit 60 is formed of an electrostatic precipitator, includes an electric field formed between a plurality of discharge wires and a dust collection plate, and ionizes gas around the discharge wires to supply ions, thereby being included in exhaust gas. The dust particles to be collected are collected on a dust collection plate to clean the exhaust gas. The sirocco fan 70 is provided on the downstream side of the dust collection unit 60, and the air on the upstream side of the dust collection unit 60 is forcibly sucked and exhausted from the exhaust port 13.

  The deodorizing unit 80 is composed of two deodorizing filters 81A and 81B positioned vertically so as to horizontally cross the exhaust flow path 20 extending in the vertical direction as illustrated. The deodorizing filters 81A and 81B have a structure in which the rectangular porous plate 82 is surrounded by a metal frame 83 as shown in FIG. This porous plate 82 is made of aluminum, and as shown in FIG. 3, for example, a fin plate processed in a wavelike manner between a plurality of strip plates 82A, 82A, 82A. It has a structure with 82 B. Then, the exhaust is allowed to pass in the thickness direction.

Furthermore, as shown in FIG. 4, an activated carbon layer 84 is formed on the surface of the porous plate 82, that is, the surfaces of all the band plates 82a and the fin plates 82b, and an air catalyst is formed on the activated carbon layer 84. The particles 85 are attached. In this activated carbon layer 84, porous activated carbon particles 84A are, for example, 0. It adheres and deposits in a thickness of about several millimeters, and is designed to adsorb odorous components contained in the exhaust gas. On the other hand, as described above, the air catalyst particles 85 are, for example, inorganic compound particles containing iron (Fe), aluminum (Al), potassium (K), titanium (Ti), and water (H ₂ O) as main components. It is designed to act on moisture and oxygen in the exhaust gas to decompose and deodorize odorous components in the exhaust gas and odorous components adsorbed on the activated carbon layer 83.

  The deodorizing filters 81A and 81B have the same structure, but as shown in FIG. 2, the deodorizing filter 81A having the vertical L and the horizontal W positioned at the upper side is located at the lower side thereof. It is about 5 to 10 mm larger than it. That is, as shown in FIGS. 5 and 6, the deodorizing filters 81A and 81B have a size of, for example, length L 300 to 350 mm, width W 270 to 300 mm, and thickness T 10 to 20 mm. It is detachably attached so as to horizontally cross the exhaust flow passage 20 with a distance of about 20 to 30 mm.

  Then, as shown in FIG. 6, these deodorizing filters 81A and 81B are mounted on the upper shelf 86A and the lower shelf 86B respectively welded along the inner periphery of the wall surface 20W forming the exhaust flow passage 20 so that the frame 83 is placed thereon. It is set to. As shown in FIG. 7, the deodorizing filters 81A and 81B are sequentially put into the exhaust flow path 20 from the exhaust port 13 and are set on the upper shelf 86A and the lower shelf 86B from above.

  At this time, if the deodorizing filters 81A and 81B have the same size, the deodorizing filter 81B can not be set on the lower shelf 86B, so the deodorizing filter 81B has a size that can pass through the upper shelf 86A. Then, in order to firmly set the smaller deodorizing filter 81B, as shown in FIG. 8, a stepped portion 87 is further formed on the lower shelf 86B, and the lower deodorizing filter 81B is fitted into the stepped portion 87. Is set. In addition, thickness T of these deodorizing filters 81A and 81B is the same in all.

  Next, the operation of the non-duct type smokeless roaster 100 according to the present invention having such a configuration will be described. As shown in FIG. 1, the smoke generated in the cooking unit 12 is sucked continuously into the exhaust flow path 20 from the intake port 12 a at the upper end together with the surrounding air. In addition, a heating source such as a gas burner or charcoal which has been ignited, a grill or the like are set in the heating and cooking unit 12 in a freely exchangeable manner. Then, the smoke sucked into the exhaust flow path 20 first becomes exhaust air and reaches the fats and oils removal part 30, and when passing through this, oil and solid matter are removed and then the dust collection part via the fire protection damper 40 It is sucked by the 60 side.

  Since the inlet side of the dust collection unit 60 is covered with the grease filter 50, most of the remaining oil that has not been removed by the fat removing unit 30 is removed by the grease filter 50. Further, the mist-like oil component not removed by the fat removing unit 30 divides the exhaust flow passage 20 by the inertial force when the exhaust flows from the fat removing unit 30 toward the grease filter 50 in a U-turn shape. Most of them are separated from the inside of the exhaust by colliding with the wall surface made of stainless steel, and therefore are hardly present in the exhaust sucked into the dust collection unit 60 side.

  The exhaust air sucked into the dust collection unit 60 is cleaned up to such an extent that most of the smoke components are removed by the electrostatic dust collection action and can not be visually recognized, and then flows upward through the sirocco fan 70 to the deodorization unit 80. Sent. When passing through the upper and lower two stages of the deodorizing filters 81A and 81B in order, the exhaust gas reaching the deodorizing unit 80 is deodorized to such an extent that almost all odor components are removed and almost imperceptible to human sense of smell.

  That is, as described above, since the activated carbon layer 84 and the air catalyst 85 are attached and formed on the surface of the deodorizing filters 81A and 81B as shown in FIG. And are decomposed by the catalytic action of the air catalyst 85 to be deodorized. In addition, a part of the odorous component is directly decomposed by the catalytic action of the air catalyst 85 without being adsorbed to the activated carbon layer 84 and is deodorized. Then, the exhaust gas that has passed through the deodorizing unit 80 becomes colorless and deodorant clean gas and is exhausted from the exhaust port 13.

  FIG. 9 shows the relationship between the deodorizing performance by the deodorizing filter and the replacement time (lifetime), and is a result of a survey based on a questionnaire by employees and visitors of a barbecue restaurant. As illustrated, the deodorizing performance of the deodorizing filters 81A and 81B according to the present invention and the deodorizing filters 81A and 81B and the basic structure thereof is the same, and compared with the deodorizing filters of the activated carbon only having no air catalyst.

  As shown in the drawing, the deodorizing performance at the initial stage of wearing showed almost 100% of the deodorizing performance of any of the deodorizing filters, and could be completely deodorized almost completely. However, in the case of the activated carbon-only deodorizing filter, the deodorizing performance decreases rapidly after about 30 days (about 1 month), and almost disappears in about 45 days (about 1 month and a half) The On the other hand, in the case of the deodorizing filters 81A and 81B of the present invention, an excellent deodorizing effect was exhibited even after about 90 days (about 3 months), and the effect continued to about 3 times.

  As described above, since the non-duct type smokeless roaster 100 according to the present invention can maintain excellent deodorizing performance over a long period with a relatively simple configuration, the manufacturing cost and the maintenance cost can be suppressed low. Further, by installing two or more deodorizing filters 81A and 81B at predetermined intervals, the odorous components can be adsorbed and decomposed in two or more stages, so deodorization can be performed more effectively.

  Further, by configuring the deodorizing filters 81A and 81B with the porous plate 82 made of aluminum or an aluminum alloy, excellent heat resistance, corrosion resistance, and durability can be exhibited, and therefore, it is possible to reuse any number of times. Maintenance costs are low. That is, the deodorizing filters 81A and 81B are prepared, for example, by immersing the porous plate 82 in a liquid in which a glue for bonding is dissolved, adhering powder active carbon particles on its surface, and drying it. It can be easily manufactured by spray-spraying a liquid air catalyst. Moreover, weight reduction can also be achieved by comprising aluminum or an aluminum alloy.

  Then, when the deodorizing performance is deteriorated due to use, that is, due to adhesion of oil or dirt, the whole porous plate 82 is immersed in the cleaning liquid (surfactant) to clean and remove the oil adhered to the surface. If it is dried, it can be reused as it is. In addition, once every 3 to 5 times of this cleaning operation, the activated carbon layer 84 is cleaned and removed using a strong cleaning liquid, and activated carbon particles and an air catalyst are attached to the surface of the porous plate 82 again. Then, the deodorizing effect similar to that of a new product can be recovered. The cost in this case is low because it is only activated carbon and an air catalyst except for labor cost required for work.

  Further, as shown in FIG. 7, the replacement work (detachment work) of the deodorizing filters 81A and 81B can be easily performed since the grille (not shown) of the exhaust port 13 can be removed and the exhaust port 13 can be performed. As another form, for example, a passage hole (not shown) having the same shape as the cross section of the deodorizing filters 81A and 81B is formed in the wall surface of the roaster body 10 partitioning the exhaust flow passage 20, and this passage hole is used It may be possible to replace it by the slide method. Alternatively, the deodorizing filters 81A, 81B, the upper shelf 86A, the lower shelf 86B, and the wall surfaces around them may be integrated (unitized) and replaced with the unit (deodorizing box).

  Further, as another embodiment of the present invention, as shown in FIG. 10, for example, the space between the downstream side of the deodorizing section 80 and the exhaust port 13 is filled with a sponge-like metal mesh body 90, and the surface of the metal mesh body 90. If an air catalyst is attached to the deodorizing filter 81A, 81B to make the metal mesh body 90 perform deodorizing, if there is an odor component that can not be deodorized by the deodorizing section 80, it is here Since the decomposition is possible, the superior deodorizing effect can be maintained for a long time.

  Further, in the present embodiment, an example of a so-called round grille roaster having a structure in which the fat removing unit 30 and the fire prevention damper 40 are provided in the middle of the exhaust flow passage 20 is shown as shown in FIG. A so-called square grille roaster having a structure integrally provided with the grease removing unit 30 consisting of a dome-shaped grease filter 32 and an oil pan 33 on the inlet side of the exhaust flow passage 20 and the fire protection damper 40 has the same function.・ Effective.

  When two or more deodorizing filters are used as in the present embodiment, one of them may be activated carbon only, and the other may be constituted by deodorizing filters 81A and 81B with an air catalyst according to the present invention. good.

100: Non-duct type smokeless roaster 10: Rooster main body 13: Exhaust port 20: Exhaust flow path 30: Fat removal part 40: Fire protection damper 50: Grease filter 60: Dust collection part 70: Sirocco fan 80: Deodorization part 81A, 81B: Deodorization Filter 84 ... activated carbon layer 85 ... activated carbon layer 84 A ... activated carbon particles 85 ... air catalyst 86 A ... upper shelf 86 B ... lower shelf 87 ... step portion 90 ... metal mesh body

Claims (4)

An exhaust flow path for suctioning the combustion smoke generated in the heating and cooking unit and passing it to the exhaust port is formed on a table-use roaster main body having a heating and cooking unit and an exhaust port;
In the exhaust flow path, a fat and oil removing unit for removing oil components in the exhaust consisting of the combustion smoke, a dust collecting unit for removing smoke components in the exhaust passing through the fat and oil removing unit, and the dust collecting unit And a deodorizing unit for removing odorous components in the exhausted gas,
The deodorizing unit is configured of a deodorizing filter that is detachably attached so as to horizontally traverse the inside of the exhaust flow channel at the position of the upward flow of the exhaust flow channel, and the deodorizing filter is a porous plate A non-duct type smokeless rooster characterized by having an activated carbon layer on the surface and having a structure in which air catalyst particles are attached on the activated carbon layer . In the non-duct type smokeless roaster according to claim 1,
A non-duct type smokeless roaster characterized by comprising two or more of the deodorizing filter at predetermined intervals up and down . In the non-duct type smokeless roaster according to claim 1 or 2,
The non-duct type smokeless roaster characterized in that the porous plate is made of aluminum or an aluminum alloy. In the non-duct type smokeless roaster according to any one of claims 1 to 3,
The non-duct type smokeless rooster characterized by having provided the mesh body which made the air catalyst adhere on the downstream of the said deodorizing part.

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